Apparatus for the winding of filaments



Dec. 1, 1936. G. A. M. HElM APPARATUS FOR THE WINDING OF FILAMENTS Filed Jan. 12, 1934 2 Sheets-Sheetl Eiq l Dec. 1, 1936. A M H 2,062,881

APPARATUS FOR THE WINDING OF FILAMENTS 2 Sheets-Sheet 2 Filed Jan. 12, 19:54

Patented Dec. 1, 1936 UNITED STATES PATENT OFFICE APPARATUS FOR THE WINDING F FILAMENTS Delaware Application January 12, 1934, Serial No. 706,381 In Germany January 24, 1933 6 Claims.

This invention relates to improvements in the winding of filaments of artificial origin, but pri marily has for its object an improved apparatus for winding freshly extruded filaments in a novel manner.

It is known that attempts have been made to use twisting machines for the winding of freshly spun artificial filaments in order to accomplish two operations inone, namely the simultaneous 10 winding and twisting of the yarn. It has been found that this process has been used with a fair measure of success in the dry spinning process.

This method of simultaneously twisting and winding the freshly extruded filaments has not,

however, heretofore proven successful with the wet spinning ofartificial filaments, particularly freshly spun viscose, or cuprammonium yarn, due to the fact that the filaments, being wet, are quite swollen and therefore weak and unable to withstand the ballooning of the thread and the friction on the twisting cap. Another drawback has been an undesirable stretching of the thread during the winding onto the spool.

In the experiments which were formerly attempted, the objective was to obtain a normally or fully twisted thread. It was therefore found necessary to use a vertical twisting spindle such as is ordinarily used in twisting machines wherein the spool sits on the twisting spindle in a vertical position. In order to obtain fully twisted yarn this spindle must be driven at a speed of 100 revolutions per meter of take-up of the thread. The result of these high speeds was, at best, to produce a very inferior'thread. By reducing the speed of .35 the twisting spindle so that no more than 20 turns per meter result, this winding can be fairly successfully carried out.

The solutions of the different problems heretofore encountered in the winding of freshly extruded filaments were believed to be found by the use of a new type of guiding means in the ordinary spool spinning process, whereby the thread, as it is taken up on the spool at the usual speed,

I has a certain twist imparted to it. Due to the fact that only so much thread is wound on the spool as is supplied by the take-up roller, the result-is that the filaments are wound with little or no tension and friction. Further, no ballooning of the thread takes place.

Applicant has further, to a great extent, eliminated the intermittent distortions encountered in the ordinary spool spinning process, which are caused by the oscillation of the thread guide, inasmuch as a flexible guiding means is used which follows the path of the thread and tends to compensate for any irregular tension occurring. This device is embodied, for example, in the lightly constructed rotating ring.

A further novel arrangement is to have the intermediate guide roller between the drawing 5 means and the twisting guide an integral part of the oscillating thread guide support, so that the tension between the roller and drawing means remains constant, due to the constant distant 4 relationship of the guide means and the twisting 10 ring.

By giving the filaments a slight twist, an improved winding, washing, desulphurization, bleaching, etc., results due to prevention of the I matting and washing out of layers of thread. 15' Variations which might perhaps occur in the low twist have been found to have practically no ef-' fect upon the uniformity of the higher twist which is given when the filaments are put through the twisting operation. 20

I The device tocarry out this novel invention is so constructed that the ordinary spool spinning machine is enabled to obtain this slightly twisted yarn by the mere substituting of this guiding means for the one already in use. 26

It is therefore an object of the present invention to provide a guide means for the winding of filaments of artificial origin whereby abetter after-treatment of the yarn is given.

Another object of the present invention is to 30 provide an apparatus whereby a slight twist is given to the freshly extruded filaments as they are being wound on the spool, thereby resulting in an improved yarn body.

Still another object of the present invention is 35 is to provide a novel thread guiding means whereby the physical characteristics of the filaments are improved, due to an elimination of the intermittent tension imposed by the oscillation of the thread guide;

These and other objects will in part become obvious and in part be pointed out in the following specification taken in conjunction with the accompanying drawings, in which:

Figure 1 is a vertical cross sectional view of a 45 spinning machine with my invention shown in operative position.

Figure 2 is a front elevation of the parts shown in Figure 1.

Figure 3 is an enlarged detail front elevation of the twisting ring and supporting means.

Figure 4 is a vertical cross section taken on the line 4-4 of Figure 3;

In the attached drawings in which like numerals of reference indicate like parts, I is the spin- 55 nerette from which the filaments 2 are extruded. The filaments are then passed through the precipitating bath 3 which is contained in the trough 4 of the spinning machine. From the bath 3 the filaments 2 pass over a drawing roller 5 around which they are looped in a manner whereby slippage is prevented.

The drawing roller 5 as illustrated is constructed as a stepped roller whereby a stretching is imparted to the filaments 2. A thread guide 6 is placed just below the drawing roller 5 and the filaments 2 are successively passed a plurality of times around the thread guide 6 and thedrawing roller 5.

The threads are then passed around a guide roller 1 mounted on the arm 8 of the oscillating thread guide support 9. The thread guide carrier or support 9 is securely mounted on the oscillating shaft I0 and is actuated thereby.

The guide roller 1 is adjustably mounted on the arm 8 so that it is in line with the axis of the twisting ring II. This ring II is supported by rollers I2 which are mounted on the supporting ring I3 carried by the oscillating thread guide carrier 9.

The ring I I is of a light construction and freely rotatable on the positioning rollers I2. A guide roller I I is carried by the ring II and the filaments 2 are passed from the guide roller 1 to the roller I4 and thence to the spool I5 aroundwhich the roller I4 rotates.

A projecting end I6 of the spool holder H has a conical base I8 which rests against the spool. The purpose of this projecting end I6 is to facilitate the starting of the winding operation, the filaments 2 being first looped by the operator around this end I6 whereupon as soon as the oscillating of the thread supporting means begins the filaments 2 will slide up the conical surface I I and onto the spool.

In operation when the spinning process is started, the oscillating thread guide support 9 is so adjusted that the guide roller I 4 is rotating around the cylindrical portion of the projection I6. The filaments 2 coming from the drawing roller 5 are passed around the guide r'oller I4 and then looped around the cylindrical portion of the projection I6. The filaments 2 between the drawing roller 5 and the guide roller I4 are then carefully pulled out by the operator and placed around the guide roller I, The oscillating shaft I0 is then set in motion to oscillate the thread guide support 9 and the twisting ring guide back and forth in order to lay the thread 2 on the take-up spool I5 in helical windings.

The ring I I operates in the usual manner, i. e., is rotated by the pull of the filaments 2 as they are wound up on the take-up spool I5. Due to the lightness of the construction of the ring, it is readily perceived that its speed of rotation easily varies to compensate for the changes in thread length caused by the oscillation of the thread guide support 9 with its resulting variations in tension.

From the foregoing description, taken in conjunction with the accompanying drawings, it is thought the complete construction, operation and advantages of my invention will be clear to those skilled in the art to which it relates.

What I claim is:

1. In a machine for spinning filaments of artificial origin, the combination of a spinnerette for extruding the filaments, a coagulating bath through which the filaments pass, a driven roller for drawing the filaments, a rotatable spool for ,mediate said twisting means and said drawin roller and bearingan approximately constant relationship to both during the oscillation of said carrier.

2. In a machine for spinning filaments of artificial origin, the combination of a spinnerette for extruding the filaments, a coagulating bath through which the filaments pass, a driven roller for drawing the filaments, a rotatable spool for collecting the filaments, a thread guide carrier anda thread guide mounted on said carrier for distributing thread on said spool, means for oscillating said carrier, said thread guide comprising a guide which rotates around the spool adapted to impart a twist to the filaments as they are drawn around said rotating guide, and. a guiding means mounted on said carrier. for directing the passage of the filaments to said rotating guide, said guiding means bearing an approximately constant relationship to said drawing roller during the oscillation of said carrier.

3. In a machine for spinning filaments of artificial origin, the combination of a spinnerette for extruding the filaments, a coagulating bath through which the filaments pass, a driven roller for drawing the filaments, a rotatable spool for collecting the filaments, and a thread guide carrier for distributing thread on said spool, means for oscillating said thread guide carrier, a thread guide on said carrier, said'thread guide being rotatably mounted on said carrier and adapted to rotate around the spool whereby a twist is imparted to the filaments as they are drawn around the said rotatable thread guide, and a guide roller mounted on said carrier for directing the passage of the filaments, said guide roller bearing an approximately constant relationship between said twisting means and said drawing roller during the oscillation of said carrier.

4. In a machine for spinning filaments of artificial origin, the combination of a spinnerette for extruding the filaments, a coagulating bath through which the filaments pass, a driven roller for drawing the filaments, a rotatable spool for collecting the filaments, and a thread guide car: rier, means for oscillating said carrier to distribute the filaments on the spool, a, thread guide mounted on said carrier and adapted, as it distributes the filaments on said spool, to impart a twist to the filaments, an intermediate guide mounted on said carrier to direct the passage of the thread from said drawing roller to said twisting guide, said intermediate guide bearing a con-, stant relationship to said twisting guide and oscillating in an arc of approximately constant radius with relation to said drawing roller.

5. In a machine for spinning filaments of artificial origin, the combination of a spinnerette for extruding the filaments, a coagulating bath through which the filaments pass, a driven roller for drawing the filaments, a rotatable spool for collecting the filaments, and a thread guide carrier, means for oscillating said thread guide carrier to distribute the filaments on the spool, a thread guide on said carrier, said thread guide comprising a guide which rotates around the spool and adapted to impart'a twist to the filaments as they are drawn around said rotating guide, an intermediate guide mounted on said carrier to direct the passage of the thread from said drawing roller to said twisting guide, said intermediate guide bearing a constant relationship to said twisting guide and oscillating in an arc of approximately constant radius with relation to said drawing roller.

6. In a machine for spinning filaments of artificial origin, the combination of a spinnerette for extruding the filaments, a coagulating bath through which the filaments pass, a driven roller for drawing the filaments, a rotatable spool for collecting the filaments, and a thread guide carrier, means for oscillating said thread guide carrier to distribute the filaments on the spool, a thread guide on said carrier, said thread guide comprising a guide which rotates around the spool and adapted to impart a twist to the filaments as they are drawn around said rotating guide, and a guide roller mounted on said carrier for directing the passage of said filaments from said drawing roller to said twisting guide, said guide roller bearing a constant relationship to said twisting guide and oscillating in an arc of approximately constant radius with relation to said drawing roller.

GUSTAV ANTON MARIA HEIM. 

